Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa23a1774h&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SA23A-1774
Physics
[2427] Ionosphere / Ionosphere/Atmosphere Interactions, [3369] Atmospheric Processes / Thermospheric Dynamics, [3389] Atmospheric Processes / Tides And Planetary Waves
Scientific paper
The Poker Flat Incoherent Scatter Radar (PFISR) commenced routine operations in March 2007. Starting in late 2007 software changes made it possible to make nearly continuous measurements of ionospheric parameters, including estimates of velocity vectors. This enables the estimation of neutral winds over the altitude range of ~90 to 120 km for much of the time from early 2008 to the present. We present the results of these long-term measurements with special emphasis on the variability in amplitude and phase of the various dominant tidal components of neutral winds. We discuss both the overall characteristics as a function of season and the response of the winds to short-duration perturbations such as SSW events.
Heinselman Craig J.
Nicolls Michael J.
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